Chain link



FIG. 1 is a front right perspective view of a chain link;

FIG. 2 is a front elevational view of a chain link;

FIG. 3 is a rear elevational view of a chain link;

FIG. 4 is a left side elevational view of a chain link;

FIG. 5 is a right side elevational view of a chain link;

FIG. 6 is a top plan view of a chain link; and,

FIG. 7 is a bottom plan view of a chain link.

The broken lines in the drawings depict portions of the chain link that form no part of the claimed design. 

CLAIM The ornamental design for a chain link, as shown and described. 